Abstract: The consequence of exploration shows the Akekule lobe has complicated pathway systems and resource rocks which have been providing hydrocarbon in Paleozoic due to many tectonic movements during the long period.On the basis of analyzing route,capability and function of path systems,the systems can be divided into three types,i.e.,fault,unconformity and karst network.By reconstructing the paleo tectonic structure with seismic data and well information and recognizing the dynamic process of oilgas migration,the research points out that the local big faults are the main paths of vertical hydrocarbon transportation.The research also concludes that the superposition of unconformities（T47,T07,T06）are the key factors of horizontal hydrocarbon migration,furthermore,the geometrical formation during the critical period of hydrocarbon gathering,especially the distribution of paleo ridge,determines the predominant direction and path of hydrocarbon migration.The types of pathway systems of hydrocarbon migration by faultunconformitykarst network along structure ridge in the form of threedimensional laddershaped are the most distinct characteristic in work area.

Key words: Akekule lobe, paleozoic, pathway system, structure ridge, oil and gas migration, Tarim Basin